British Prime Minister Theresa May is facing an uncomfortable meeting with Conservative Party lawmakers who are demanding she quit within weeks.

Executive members of a committee that oversees party leadership contests are meeting May Wednesday. Committee member Geoffrey Clifton-Brown said members wanted May to “set out a timetable to trigger a leadership contest.”

Pro-Brexit lawmakers are furious that Britain has not yet left the European Union, almost three years after voters backed Brexit in a referendum. Many blame May for the impasse.

May argues that she struck a divorce deal with the EU, but it has been rejected by Parliament three times.

The prime minister plans to make a fourth attempt next month to get lawmakers’ backing for Brexit terms.

Britain is due to leave the EU on Oct. 31.